LMS Brake Van-2

 This is where I made the second mistake- the pips are for locating the sides of the weight box- not as I thought-detail! Still, the way I noticed this was that the box didn't fit under the chassis so I carved the necessary pips off and it now all fits!
A chunk of lead spaced with some card provides weight at the lowest point.
Next the sides which fit snugly along the chassis edge- pop the inner ends in before it sets- these are easy as there are locating pips and it all ends up square.
I must say that this goes together very well- look forward to more of the same design.